<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>游戏大厅</title>
    <link rel="stylesheet" href="./css/common.css">
    <link rel="stylesheet" href="./css/game_hall.css">
</head>

<body>
    <div class="nav">网络五子棋对战游戏</div>
    <!-- 整个页面的容器元素 -->
    <div class="container">
        <!-- 这个 div 在 container 中是处于垂直水平居中这样的位置的 -->
        <div>
            <!-- 展示用户信息 -->
            <div id="screen">
            </div>
            <!-- 匹配按钮 -->
            <div id="match-button">开始匹配</div>
        </div>
    </div>

    <script src="./js/jquery.min.js"></script>
    <script>
        
        var ws_uri = "ws://" + location.host + "/hall";
        var ws_hdl = null;

        window.onbeforeunload = function () {
            ws_hdl.close();
        }

        //按钮有两个状态：没有进行匹配的状态，正在匹配中的状态
        var button_flag = "stop";
        //点击按钮的事件处理：
        var be = document.getElementById("match-button");
        be.onclick = function()
        {
            if(button_flag == "stop")
            {
                // 1.没有进行匹配的状态下点击按钮，发送对战匹配请求
                var req_json = 
                {
                    optype:"match_start"
                }
                ws_hdl.send(JSON.stringify(req_json));
            }
            else
            {
                // 2.正在匹配中的状态下点击按钮，发送停止对战的匹配请求
                var req_json = 
                {
                    optype:"match_stop"
                }
                ws_hdl.send(JSON.stringify(req_json));
            }
        }

        function get_user_info() 
        {
            $.ajax
                ({
                    url: "/info",
                    type: "get",
                    success: function (res) 
                    {
                        console.log(JSON.stringify(res));
                        var info_html = "<p>" + "用户: " + res.username + " 积分: " + res.score
                            + "</br>" + "比赛场次: " + res.total_count + " 获胜场次:" + res.win_count + "</p>";
                        var screen_div = document.getElementById("screen");
                        screen_div.innerHTML = info_html;

                        //切换协议建立websocket长连接
                        ws_hdl = new WebSocket(ws_uri);
                        
                        ws_hdl.onopen = ws_onopen;
                        ws_hdl.onclose = ws_onclose;
                        ws_hdl.onerror = ws_onerror;
                        ws_hdl.onmessage = ws_onmessage;
                    },
                    error: function (xhr) 
                    {
                        alert(JSON.stringify(xhr));
                        location.replace("/login.html");
                    }
                })
        }

        function ws_onopen() 
        {
            console.log("websocket open");
        }
        function ws_onclose() 
        {
            console.log("websocket close");
        }
        function ws_onerror() 
        {
            console.log("websocket error");
        }
        function ws_onmessage(evt) 
        {
            var rsp_json = JSON.parse(evt.data);
            if(rsp_json.result == false)
            {
                alert(evt.data);
                loaction.replace("/login.html");
                return;
            }
            if(rsp_json["optype"] == "hall_ready")
            {
                console.log("游戏大厅链接建立成功");
            }
            else if(rsp_json["optype"] == "match_success")
            {
                //对战匹配成功
                alert("对战匹配成功,进入游戏房间");
                location.replace("./game_room.html");
                return;
            }
            else if(rsp_json["optype"] == "match_start")
            {
                console.log("玩家已加入匹配队列");
                button_flag = "start";
                be.innerHTML = "匹配中...点击按钮停止匹配!";
                return;
            }
            else if(rsp_json["optype"] == "match_stop")
            {
                console.log("玩家已退出匹配队列");
                button_flag = "stop";
                be.innerHTML = "开始匹配";
                return;
            }
            else
            {
                alert(evt.data);
                loaction.replace("/login.html");
                return;
            }
        }
        get_user_info();
    </script>
</body>

</html>